US Patent 7438401 Inkjet recording apparatus and ink cartridge

There is disclosed a liquid container that can be removably held in a liquid container accommodation portion by pushing the container in an insertion direction. The liquid container is mounted on a carriage having a container accommodation region. A one-push type fixing member in a position facing a surface parallel to an insertion direction in which the container is inserted into the container accommodation region is engaged with a fixing protrusion forming another one-push type fixing member and cooperating with the first-mentioned one-push type fixing member, so that the container is held in a predetermined position in a state in which the container is resiliently urged by a spring in a direction opposite to the insertion direction.